Hi @JeffB,
The process is a little complicated (that’s my understatement of the day…): The images in the input table (ImgLib2-based) have to be registered with ImageJ1(!!) through the imagej-legacy
project for execution and made the active window so that the macro is executed on the correct image. Unfortunately, there is a lot that can go wrong in the whole process.
That surprises me, to be honest! The last open image should be available at the top port of the ImageJ Macro node… Have you have done this test with an image opened inside of the ImageJ macro?
Best,
Stefan
PS: Is there another reason why you want to load an image inside the ImageJ macro, besides that you can’t open your images (as described in Image Reader nodes limited to 4GB for .tif files?)?